走路左晃右晃
发表于 2025-3-26 22:58:00
Physical Explanation of Waveguiding by Single-Mode Fibers,. Waveguiding in single-mode fibers cannot be explained as in multimode fibers by total internal reflection of rays at the core boundary (for step-index fibers) or by continuous ray bending in graded-index fibers.
Encumber
发表于 2025-3-27 03:59:27
Higher-Order Modes,th. These data are combined into the normalized frequency . (5.8). The higher the value of ., the larger the number of guided modes. Although a single-mode fiber is designed for transmitting only the fundamental mode, it is necessary to have some knowledge about the other guided modes, the so-called higher-order modes.
注意力集中
发表于 2025-3-27 06:11:14
Spot Size and Width of the Radiation Pattern,extent is an important parameter for characterizing single-mode fiber properties and it is necessary to define a spot size as a quantitive measure for the width of the radial field distribution.
粗鲁的人
发表于 2025-3-27 12:36:22
Physical Explanation of Waveguiding by Single-Mode Fibers,rays of “zero” diameter, which in geometric optics are introduced as the geometrical trajectories along which light travels from one point to another . Waveguiding in single-mode fibers cannot be explained as in multimode fibers by total internal reflection of rays at the core boundary
cortex
发表于 2025-3-27 14:29:20
Gaussian Beams,by an incident free beam, and produces a free beam radiated from the fiber end. For these reasons, it is worth while studying the basic properties of free wave beams propagating through a homogeneous medium. We have already described some qualitative properties of wave beams in a homogeneous medium
invert
发表于 2025-3-27 19:33:10
Higher-Order Modes, refractive-index profile, the number of guided modes depends on the core radius, the relative refractive-index difference, and the operating wavelength. These data are combined into the normalized frequency . (5.8). The higher the value of ., the larger the number of guided modes. Although a single
Estrogen
发表于 2025-3-27 22:55:58
Radiation from the Fiber End,tially, the fundamental fiber mode is transformed into the fundamental Gaussian beam mode and the second order fiber mode into the second order Gaussian beam mode (Chap. 4). The fiber end acts as as transmitting dielectric antenna, transforming a guided electromagnetic wave into a freely propagating
敬礼
发表于 2025-3-28 03:55:57
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barium-study
发表于 2025-3-28 07:34:48
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粗鲁性质
发表于 2025-3-28 11:02:37
Components for Single-Mode Fibers,ese devices, such optical components as light source to fiber couplers, splices, connectors, directional couplers, attenuators, multiplexers, isolators, switches, etc. are essential to realize practical transmission systems or are required for measuring purposes.